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Zhang, L., Pang, X., Ozolins, O., Udalcovs, A., Schatz, R., Westergren, U., . . . Chen, J. (2018). 15-Gbaud PAM4 Digital Mobile Fronthaul with Enhanced Differential Pulse Coding Modulation Supporting 122 LTE-A Channels with up to 4096QAM. In: 2017 European Conference on Optical Communication (ECOC): . Paper presented at 43rd European Conference on Optical Communication, ECOC 2017, Gothenburg, Sweden, 17 September 2017 through 21 September 2017 (pp. 1-3). Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>15-Gbaud PAM4 Digital Mobile Fronthaul with Enhanced Differential Pulse Coding Modulation Supporting 122 LTE-A Channels with up to 4096QAM
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2018 (English)In: 2017 European Conference on Optical Communication (ECOC), Institute of Electrical and Electronics Engineers (IEEE), 2018, p. 1-3Conference paper, Published paper (Refereed)
Abstract [en]

By employing enhanced DPCM, 15-Gbaud PAM4 digital mobile fronthaul is experimentally demonstrated to support 122 LTE-A channels with up to 4096QAM. Compared to PCM based CPRI, the supported number of channels increases 5 times and EVM is obviously improved.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-228555 (URN)10.1109/ECOC.2017.8346198 (DOI)000434969300372 ()2-s2.0-85046939372 (Scopus ID)9781538656242 (ISBN)
Conference
43rd European Conference on Optical Communication, ECOC 2017, Gothenburg, Sweden, 17 September 2017 through 21 September 2017
Funder
Swedish Foundation for Strategic Research Swedish Research CouncilGöran Gustafsson Foundation for Research in Natural Sciences and Medicine
Note

QC 20180528

Available from: 2018-05-28 Created: 2018-05-28 Last updated: 2018-08-28Bibliographically approved
Mardoyan, H., Jorge, F., Ozolins, O., Estaran, J. M., Udalcovs, A., Konczykowska, A., . . . Bigo, S. (2018). 204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications. In: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings: . Paper presented at We demonstrate an on-off keyed transmitter with direct detection, at record symbol rates of 204Gbaud and 140Gbaud, over 10km and 80km, respectively, powered by a high-speed InP-based 2:1 selector and travelling-wave electro-absorption laser-modulator.. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>204-GBaud On-Off Keying Transmitter for Inter-Data Center Communications
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2018 (English)In: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2018Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate an on-off keyed transmitter with direct detection, at record symbol rates of 204Gbaud and 140Gbaud, over 10km and 80km, respectively, powered by a high-speed InP-based 2: 1 selector and travelling-wave electro-absorption laser-modulator.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-232642 (URN)000437286300703 ()2-s2.0-85050011867 (Scopus ID)9781943580385 (ISBN)
Conference
We demonstrate an on-off keyed transmitter with direct detection, at record symbol rates of 204Gbaud and 140Gbaud, over 10km and 80km, respectively, powered by a high-speed InP-based 2:1 selector and travelling-wave electro-absorption laser-modulator.
Note

QC 20180803

Available from: 2018-08-02 Created: 2018-08-02 Last updated: 2018-08-02Bibliographically approved
Mardoyan, H., Jorge, F., Ozolins, O., Estaran, J. M., Udalcovs, A., Konczykowska, A., . . . Bigo, S. (2018). 204-GBaud On-OffKeying transmitter for inter-data center communications. In: Optics InfoBase Conference Papers: . Paper presented at Optical Fiber Communication Conference, OFC 2018, San Diego, United States, 11 March 2017 through 15 March 2017. Optics Info Base, Optical Society of America
Open this publication in new window or tab >>204-GBaud On-OffKeying transmitter for inter-data center communications
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2018 (English)In: Optics InfoBase Conference Papers, Optics Info Base, Optical Society of America, 2018Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate an on-offkeyed transmitter with direct detection, at record symbol rates of 204Gbaud and 140Gbaud, over 10km and 80km, respectively, powered by a high-speed InPbased 2:1 selector and travelling-wave electro-absorption laser-modulator.

Place, publisher, year, edition, pages
Optics Info Base, Optical Society of America, 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-228663 (URN)10.1364/OFC.2018.Th4A.4 (DOI)2-s2.0-85047130701 (Scopus ID)9781557528209 (ISBN)
Conference
Optical Fiber Communication Conference, OFC 2018, San Diego, United States, 11 March 2017 through 15 March 2017
Note

QC 20180529

Available from: 2018-05-29 Created: 2018-05-29 Last updated: 2018-05-29Bibliographically approved
Lin, R., Pang, X., Van Kerrebrouck, J., Verplaetse, M., Ozolins, O., Udalcovs, A., . . . Chen, J. (2018). Real-time 100 Gbps/lambda/core NRZ and EDB IM/DD Transmission over 10 km Multicore Fiber. In: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings: . Paper presented at 2018 Optical Fiber Communications Conference and Exposition, OFC 2018, San Diego, United States, 11 March 2018 through 15 March 2018. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Real-time 100 Gbps/lambda/core NRZ and EDB IM/DD Transmission over 10 km Multicore Fiber
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2018 (English)In: 2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2018Conference paper, Published paper (Refereed)
Abstract [en]

A BiCMOS chip-based real-time IM/DD spatial division multiplexing system is experimentally demonstrated for short-reach communications. 100 Gbps/./core NRZ and EDB transmission is achieved below 7%-overhead HD-FEC limit after 10km 7-core fiber with optical dispersion compensation.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
National Category
Communication Systems
Identifiers
urn:nbn:se:kth:diva-232641 (URN)000437286300418 ()000437286300418 (Scopus ID)9781943580385 (ISBN)
Conference
2018 Optical Fiber Communications Conference and Exposition, OFC 2018, San Diego, United States, 11 March 2018 through 15 March 2018
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research
Note

QC 20180802

Available from: 2018-08-02 Created: 2018-08-02 Last updated: 2018-08-02Bibliographically approved
Lin, R., Van Kerrebrouck, J., Pang, X., Verplaetse, M., Ozolins, O., Udalcovs, A., . . . Chen, J. (2018). Real-time 100 Gbps/lambda/core NRZ and EDB IM/DD transmission over multicore fiber for intra-datacenter communication networks. Optics Express, 26(8), 10519-10526
Open this publication in new window or tab >>Real-time 100 Gbps/lambda/core NRZ and EDB IM/DD transmission over multicore fiber for intra-datacenter communication networks
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2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 8, p. 10519-10526Article in journal (Refereed) Published
Abstract [en]

A BiCMOS chip-based real-time intensity modulation/direct detection spatial division multiplexing system is experimentally demonstrated for both optical interconnects. 100 Gbps/lambda/core electrical duobinary (EDB) transmission over 1 km 7-core multicore fiber (MCF) is carried out, achieving KP4 forward error correction (FEC) limit (BER < 2E-4). Using optical dispersion compensation, 7 x 100 Gbps/lambda/core transmission of both non-retunito-zero (NRZ) and EDB signals over 10 km MCF transmission is achieved with BER lower than 7% overhead hard-decision FEC limit (BER < 3.8E-3). The integrated low complexity transceiver IC and analog signal processing approach make such a system highly attractive for the high-speed intra-datacenter interconnects.

Place, publisher, year, edition, pages
OPTICAL SOC AMER, 2018
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-227222 (URN)10.1364/OE.26.010519 (DOI)000430337700098 ()29715987 (PubMedID)2-s2.0-85045577227 (Scopus ID)
Note

QC 20180521

Available from: 2018-05-21 Created: 2018-05-21 Last updated: 2018-05-21Bibliographically approved
Lin, R., Kerrebrouck, J. V., Pang, X., Verplaetse, M., Ozolins, O., Udalcovs, A., . . . Chen, J. (2018). Real-time 100 Gbps/λ/core NRZ and EDB IM/DD transmission over multicore fiber for intra-datacenter communication networks. Optics Express, 26(8), 10519-10526
Open this publication in new window or tab >>Real-time 100 Gbps/λ/core NRZ and EDB IM/DD transmission over multicore fiber for intra-datacenter communication networks
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2018 (English)In: Optics Express, ISSN 1094-4087, E-ISSN 1094-4087, Vol. 26, no 8, p. 10519-10526Article in journal (Refereed) Published
Abstract [en]

A BiCMOS chip-based real-time intensity modulation/direct detection spatial division multiplexing system is experimentally demonstrated for both optical interconnects. 100 Gbps/λ/core electrical duobinary (EDB) transmission over 1 km 7-core multicore fiber (MCF) is carried out, achieving KP4 forward error correction (FEC) limit (BER < 2E-4). Using optical dispersion compensation, 7 × 100 Gbps/λ/core transmission of both non-return-to-zero (NRZ) and EDB signals over 10 km MCF transmission is achieved with BER lower than 7% overhead hard-decision FEC limit (BER < 3.8E-3). The integrated low complexity transceiver IC and analog signal processing approach make such a system highly attractive for the high-speed intra-datacenter interconnects.

Place, publisher, year, edition, pages
Optical Society of America, 2018
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-227609 (URN)10.1364/OE.26.010519 (DOI)000430337700098 ()29715987 (PubMedID)2-s2.0-85045577227 (Scopus ID)
Funder
Swedish Research CouncilSwedish Foundation for Strategic Research VINNOVAEU, Horizon 2020, 688172
Note

QC 20180518

Available from: 2018-05-18 Created: 2018-05-18 Last updated: 2018-05-18Bibliographically approved
Ozolins, O., Pang, X., Udalcovs, A., Schatz, R., Westergren, U., Rodrigo Navarro, J., . . . Jacobsen, G. (2017). 100 Gbaud 4PAM Link for High Speed Optical Interconnects. In: 43RD EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC 2017): . Paper presented at Gothenburg; Sweden; 17 September 2017 through 21 September 2017. IEEE
Open this publication in new window or tab >>100 Gbaud 4PAM Link for High Speed Optical Interconnects
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2017 (English)In: 43RD EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC 2017), IEEE , 2017Conference paper, Published paper (Refereed)
Abstract [en]

We demonstrate 100 Gbaud 4PAM transmission over 400 meters SMF with monolithically integrated 1550 nm DFB-TWEAM having 100 GHz 3-dB bandwidth with 2 dB ripple. We evaluate its capabilities to enable two lanes 400 GbE client-side links for optical interconnects.

Place, publisher, year, edition, pages
IEEE, 2017
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-231673 (URN)10.1109/ECOC.2017.8345960 (DOI)000434969300134 ()2-s2.0-85046964032 (Scopus ID)
Conference
Gothenburg; Sweden; 17 September 2017 through 21 September 2017
Note

QC 20180828

Available from: 2018-08-28 Created: 2018-08-28 Last updated: 2018-08-28Bibliographically approved
Ozolins, O., Pang, X., Iglesias Olmedo, M., Kakkar, A., Udalcovs, A., Gaiarin, S., . . . Jacobsen, G. (2017). 100 GHz Externally Modulated Laser for Optical Interconnects. Journal of Lightwave Technology, 35(6), 1174-1179
Open this publication in new window or tab >>100 GHz Externally Modulated Laser for Optical Interconnects
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2017 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 35, no 6, p. 1174-1179Article in journal (Refereed) Published
Abstract [en]

We report on a 116 Gb/s on-off keying (OOK), four pulse amplitude modulation (PAM) and 105-Gb/s 8-PAM optical transmitter using an InP-based integrated and packaged externally modulated laser for high-speed optical interconnects with up to 30 dB static extinction ratio and over 100-GHz 3-dB bandwidth with 2 dB ripple. In addition, we study the tradeoff between power penalty and equalizer length to foresee transmission distances with standard single mode fiber.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2017
Keywords
Direct detection, distributed feedback laser (DFB), electroabsorption modulator, optical interconnects
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-206702 (URN)10.1109/JLT.2017.2651947 (DOI)000399388500004 ()2-s2.0-85018964493 (Scopus ID)
Note

QC 20170509

Available from: 2017-05-09 Created: 2017-05-09 Last updated: 2018-09-19Bibliographically approved
Hong, X., Ozolins, O., Guo, C., Pang, X., Zhang, J., Navarro, J. R., . . . Chen, J. (2017). 1.55-jnm EML-based DMT transmission with nonlinearity-aware time domain super-nyquist image induced aliasing. In: 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings: . Paper presented at 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017, 19 March 2017 through 23 March 2017. Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>1.55-jnm EML-based DMT transmission with nonlinearity-aware time domain super-nyquist image induced aliasing
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2017 (English)In: 2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings, Institute of Electrical and Electronics Engineers Inc. , 2017Conference paper (Refereed)
Abstract [en]

We experimentally demonstrate a DMT transmission system with 1.55-μm EML using nonlinearity-aware time domain super-Nyquist image induced aliasing. Compared with linear equalization, the capacity is improved by ∼16.8%(33.1%) with proposed method for 4(40) km transmission.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2017
Keywords
Optical fibers, Aliasing, Linear equalization, Nyquist, Time domain, Transmission systems, Optical fiber communication
National Category
Nano Technology
Identifiers
urn:nbn:se:kth:diva-216490 (URN)2-s2.0-85025827916 (Scopus ID)9781943580231 (ISBN)
Conference
2017 Optical Fiber Communications Conference and Exhibition, OFC 2017, 19 March 2017 through 23 March 2017
Note

Funding details: CSC, China Scholarship Council; Funding details: 61307090, NSFC, National Natural Science Foundation of China; Funding details: 61550110240, NSFC, National Natural Science Foundation of China; Funding details: 61605047, NSFC, National Natural Science Foundation of China; Funding details: 61671212, NSFC, National Natural Science Foundation of China; Funding text: This work is supported by EIT Digital Royal Garden project, Swedish Research Council, Swedish Foundation for Strategic Research, Göran Gustafsson Stiftelse, China Scholarship Council, and National Natural Science Foundation of China (# 61550110240, 61671212, 61605047, 61307090). The equipment was funded by Knut and Alice Wallenberg foundation.

QC 20171201

Available from: 2017-12-01 Created: 2017-12-01 Last updated: 2017-12-01Bibliographically approved
Hong, X., Ozolins, O., Guo, C., Pang, X., Zhang, J., Navarro, J. R., . . . Chen, J. (2017). 1.55-mu m EML-based DMT Transmission with Nonlinearity-Aware Time Domain Super-Nyquist Image Induced Aliasing. In: 2017 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC): . Paper presented at Optical Fiber Communications Conference and Exhibition (OFC), MAR 19-23, 2017, Los Angeles, CA. IEEE
Open this publication in new window or tab >>1.55-mu m EML-based DMT Transmission with Nonlinearity-Aware Time Domain Super-Nyquist Image Induced Aliasing
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2017 (English)In: 2017 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC), IEEE , 2017Conference paper, Published paper (Refereed)
Abstract [en]

We experimentally demonstrate a DMT transmission system with 1.55-mu m EML using nonlinearity-aware time domain super-Nyquist image induced aliasing. Compared with linear equalization, the capacity is improved by similar to 16.8%(33.1%) with proposed method for 4(40) km transmission.

Place, publisher, year, edition, pages
IEEE, 2017
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-210951 (URN)000403405800245 ()978-1-943580-23-1 (ISBN)
Conference
Optical Fiber Communications Conference and Exhibition (OFC), MAR 19-23, 2017, Los Angeles, CA
Note

QC 20170713

Available from: 2017-07-13 Created: 2017-07-13 Last updated: 2017-07-13Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-7056-4379

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